As a common wharf structure, the high-piled beam-slab wharf is characterized by the cantilever slab arranged at the expansion joint between the structural sections in most cases. According to wharf routine tests, cantilever slab cracking is quite common. Relying on a typical high-piled wharf, in combination with actual wharf operations, this paper conducted the numerical analysis of the cantilever slab dynamic response under the dynamic load effect with its results showing that the dynamic load is the main cause for cracking. This paper suggested blocking up with steel plates should be adopted for reinforcement and reconstruction of high-piled wharf structure cantilever slab, with its calculation results showing blocking up with steel plates can effectively resolve cantilever slab cracking.
The vertical bearing capacity calculation and security evaluation methods of high-pile pier skid-way quay while large offshore platform moving to barge whose deck elevation adjusted by aided jacks are researched by the theoretic analysis and numerical calculation method. Based on the study, the load effects of 6000ton skid-way quay are acquired under the offshore platform weight and jacks load caused in the process of large platform moving to the barge whose deck elevation adjusted by aided jacks, the security of skid-way is assessed, and the security measures of skid-way structure which should be taken during moving platform are proposed. The analysis of simulation results shows that the bearing capacity of skid-way in vertical meets the requirements of design under the jacks load and platform weight by using uniform pressure to compute. The 6000ton skid-way quay is secure while large offshore platform loaded to barge whose deck elevation adjusted by aided jacks. The conclusions above can provide the experience for the security evaluation of high-pile pier skid-way structure and the optimization of procedure to load the large offshore platform on barge whose deck elevation adjusted by aided jacks.
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